feb05post - Br H R C H Br CH 3 NH 2 KOH C C R H C C R CH 3...

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Chemical Properties (9.6) The terminal -C= C- H is acidic; pKa = ~26. CH 4 pKa = 60; NH 3 pKa = 40; H 2 O pKa = 16 CH 3 C= CH + Base ---> CH 3 C= C - What bases could be used to deprotonate alkynes?
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Synthesis of Alkynes by Double Elimination (9.8) H H R R Br 2 C Br H R C H Br R C Br H R C H Br R NH 2 H R Br R NH 2 H R Br R C C R R Vicinal Dibromide
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Regioselectivity (9.8) C
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Unformatted text preview: Br H R C H Br CH 3 NH 2 KOH C C R H C C R CH 3 Terminal Alkyne Internal Alkyne 200C C C C H H 3 C H H Base C C C H H 3 C H C C C H H 3 C H + Base-H Base-H C C C H H 3 C H H Base C C C H H 3 C H C C C H H 3 C H Base-H C CH 3 C H 3 C C C C H H 3 C H H Base...
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This note was uploaded on 03/06/2010 for the course CH 222 taught by Professor Dr.nichols during the Spring '10 term at John Carroll.

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feb05post - Br H R C H Br CH 3 NH 2 KOH C C R H C C R CH 3...

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